LG Dry Contact Installation Manual page 8

Setting and using method
n Flow Chart for 'OPER_SW'
-. When not using WIND signal
Use WIND Signal?
NO
Set the switch '0 ~ 7'
YES
Use Thermal function?
NO
Set the switch '0 ~ 3'
YES
Use Operation mode?
NO
Set the switch '0 ~ 1' Set the switch '2 ~ 3'
Use Dry Contact Use Dry Contact
Control Priority? Control Priority?
NO YES NO YES
Switch 0 Switch 1 Switch 2 Switch 3
-. When using WIND signal
Use WIND Signal?
YES
Set the switch '8 ~ F'
YES
Use Thermal function?
NO
Set the switch '8 ~ B'
YES
Use Operation mode?
NO
Set the switch '8 ~ 9' Set the switch 'A ~ B'
Use Dry Contact Use Dry Contact
Control Priority? Control Priority?
NO YES NO YES
Switch 8 Switch 9 Switch A Switch B
Notes
• When you change a function with remote control without setting Dry_contact control priority the display
condition between remote control and controller can be different.
14 Dry contact for thermostat
Set the switch '4 ~ 7'
YES
Use Operation mode?
NO
Set the switch '4 ~ 5' Set the switch '6 ~ 7'
Use Dry Contact Use Dry Contact
Control Priority? Control Priority?
NO YES NO YES
Switch 4 Switch 5 Switch 6 Switch 7
Set the switch 'C ~ F'
YES
Use Operation mode?
NO
Set the switch 'C ~ D' Set the switch 'E ~ F'
Use Dry Contact Use Dry Contact
Control Priority? Control Priority?
NO YES NO YES
Switch C Switch D Switch E Switch F
n Function table for the selection of 'OPER_SW' and the input
signal
CN_MODE input
OPER_SW
FAN
0
0
0
0
2,3,6,7,A,B,E,F
1
1
1
1
Others -
CN_WIND input
OPER_SW
Low
0
0
0
0
8,9,A,B,C,D,E,F
1
1
1
1
Others -
CN_OPER
OPER_SW
Thermal
0
0
4,5,6,7,C,D,E,F
1
1
Others -
Notes
1) Thermal On : This input will change automatically desired temperature
Desired Temperature 18 °C In cooling mode
Desired Temperature 30 °C In heating mode
No function In FAN mode
Setting and using method
OPER_SW
Function
HEAT COOL
0 0 NA
0 1 COOL
1 0 HEAT
1 1 NA
0 0 FAN
0 1 NA
1 0 NA
1 1 NA
- - NA
Function
Middle High
0 0 NA
0 1 High
1 0 Middle
1 1 NA
0 0 Low
0 1 NA
1 0 NA
1 1 NA
- - NA
Function
Operation
0 Thermal Off + Stop
1 Thermal Off + Run
0 Thermal On + Stop
1 Thermal On + Run
- NA
Installation manual 15